Kiln.



R. W. P. HORN..

. YKILN, APPLIOATION FILED HOV. 13. 1908.

a Patented Aug. 3.v 1909.

ltUIllllt'l W. l. HORN, 01" NEW CASTLE, PENNSYLVANIA.

KILN.

No. neef/e5.

Specification o'f Letters Patent.

Patented Aug. 3, 1909.

Application filed November 13, 190B. Serial No. 462,389.

To-all whom 'it may mncern.:

Beit known that l, ltonnn'r W. P. HORN, a citizen of the United States,residing at New Castle, in the county of Lawn-,nce and State' 0fPennsylvania, have invented nov.

- Vand useful Improvements in Kilns, of which q' the 'following is a seciication.

' Th1s invention re tes to improvements in kilns, and consists incertain improvements in the construction thereof as wi lbe hereinjiafterfully described and pointed out in the v,.elcilris.

7 The invention is artieularly adapted for 4inianulaeturing Port andcement. 4

cement is to Eplverizing.A

The common method of making Portland A repare the raw materials by luspulverized material is fed 't0 kiln Whiehis rotated, the kiln being setvslightly on an incline. This inclination feeds the'material through thekiln. The combus- -tion material is all fed in throu h one end of thekiln. The elinker formed 1n the kiln is afterward ground or pulverized,so as to give it the powdered form of commenl Portland cement.

`The materials entering into Portland eement can be much more readilypulverized when in heated condition. In the preferred form of myinvention therefore, I propose to heat the material initially to renderit soft vand brittle, so that it may be readily crushed.

I prefer after this crushin j action to treat the material so crushed,whi e still retaining its initial heat, tothe linal burning orclinkeling process. ln my preferred form of kilns also,

the air and combustible fuel are delivered at different points in thekiln, so that complete combustion is iwcoinplished, and the tomperaturcof dll'erent parts of the kilnmoro readily controlled. as desired.

The further objects of my invention will appear from the specilicatiox'iand claims.

a .he invention is illustratml in the accomanying drawings as folien s:

` Figure] shows a central longitudinal soction of a lkiln on` tho line]---l. in Fig. 2. Fig. 2. a cross section on the line 2-.-2 in Fig. 1. lmarks the kiln walls. 'lhese ordinarily forin a lon narrow kiln.Airisadinittcd at 2,' he drut opening being provided with a ga ai. 2 for,controllulgthe admission of air.

A stack 3 is vrovided at the o )osito end. of

`I l l the klln. lillelgirelerabl 1n the folrm of l pulverlzed coal isdelivers -at various open .action-of the crusher.

ings 4 to the kiln: These may be arranged at different points along thelength of the kiln to give the desired resultsas the distribution ofheat and the best results as to the mixing of the coal and air. The fuelis delivered to the openings 4 through chutes 5 which are connected'with a conveyor 6 for distributie the fuel to the several' chutes.

Arrange within the kiln is a long support` tonso that when reciproeatodoroscillated material will be fed from it by reason of the 'movement ofthe support. lhe support coni )rises the part 7 on .hich tho ran'materia is mixed and heated; a grinding pol'- tion 8 in continuation ofthe part 7; and a burning or elinkeringr portion 9 in continuation ofthe part 8. lhese are all incloscd in a metal 'shell 10, and thesupports 7 and S) have surfaces of some refractory material such as lirebriokl over the metal 10.

"lhe support has the ribs 12 arranged on its under side. Those ribs reston the rollers 13. The rollers are mounted in bearings 14, and thebearings are mounted on the pillars 15, arranged on. the lloor of thekiln.

Ashaft 1G is arranged on the walls of the kiln and parallel to thesupport within it. This shaft is given an oscillating movement by anycommon mechanism for this purpose. lt is provided. with the rock arms 17which are connected by the links 18 with arms 19 extending from thelower .part of the support. These are preferably arranged along thesuplports, so as to move the support with as litt c strain as Jossible.4

The materia is fcd to the support by a chute 20, and is discharged fromthe support to a conve er 21. The `art 8 is surfaced with material 11adifpte to withstand the Crushing rolls 22 are erran ed above the metal11, so that the heute material is, as the su port is oscillated, bron htunder the rolls 22 and vel-ized. T lese 'rolls are carried by the s aftslotted at 29, to allow for the necessary play as the support ispscillated.

u1- .l 10c 23 which extendsthrough the Wall of the I prefer to providethe dellcctor 27 over the rolls 22, so that the heated gases are carriedby way ol' a liuc 28 around the rolls. In this way the temperaturedirectly at the rolls is somewhat below than at other points on the suiport.

In the o )eration of the device, material is fed throngr i the chute 2()onto the part olE the support 7. 'lhc material is ordinarily in its rawstate. the support is oscillatcd, it is by reason of oscillation andinclination of the support fed forward on the su )poi-t, and at the sametime so heated to ren er it soft and brittle. It reaches the part 8 ofthe support in this condition, and is readily pulverized4 by means ofthe rolls 22 acting,r u on the outside surface 11. The material in t iiscondition is discharged from the support onto the conveyer 21 from whichit 1s carried out 'of thel kiln, and afterward pulverized and brought tothe forni oi ordinary Portland cement.

lt will be noted, that thc sup' ort is so propm'tioned to the width ofthe ki n, as to leave a space 3() between it and the side walls of.thekiln. T he air passes through this space to the part above thesupport where combustiou actually takes place. In this way the air maybe delivered to iliflerent'parts of the kiln as will be most ellicientin producinitr combustion and. regulating temperature.

What I claim as new is:

l. In a kiln, the combination of the walls; a support for the materialbainsr treated arranged within the kiln; means for moving the materialover the support; means for feeding fuel to the kiln above the su port;and devices for delivering air to tlie kiln below thesupport, thesupport and walls being proportioned to leave a space between the wal sand su )port for the passage of air.

2. In a kiln, the combination of t'he kilnv walls; a semi-circularsupport arranfed within the walls on which the materia is treated, saidsupport bein" proportioned to the walls to leave a space between thewalls and the support; means for delivering fuel to the kiln above thesu iport; devices Vfor delivering,r air to the kiln lielow the support;and means for oscillating the support.

3. In a'kiln, the combination of the kiln walls; asupport within thewalls for the material being treated, said sup ortl being soproportioned to the walls as to cave n. space etween the support and thewalls; means for moving the nn'iterial lover the sup ort; means fordeliveringV fuelto the kiln a4 ove the Vsu port; and means fordelivering air to the k' nV below the support,v the air passim throughthespace between 'the support an the walls tosup )ort combustion.

4. In a kiln, tire combination of. the walls a semi-circular supportarrangedwithin the walls and proportioned to the walls to leave a spacebetween the support and the Walls; means for delivering fuel tothe kilnabove the support; devices for deliverin air belowf the support, the airpassing throng the space between the support and the walls to supportcol'nbustion; and means for oscillating the support.

5. In akiln, the combination ofthe walls; a support arrai'iged withinthe walls on which the material is treated ,'*mcans for moving thematerial over the su port; means for delivering fuel at interva s alongthe sides-of the support; and means i'ordelivcring air to supi portcombustion. f f

The combination of a^kiln;a support upon which the `rniiitcr'ial maybetreated,

and a crushei' in the 'kiln for operating.uponl :L

the heated material; `and means for convey@` ingl material iirra heatedcondition to the crusher. i y Y i,

7. The combination 'oid-a kiln; a erushei'jn the kiln; and means forcarrying tlienlatcrial in a heated condition to the Crusher...

8. flhe combination of a kiln; a crushein l the kiln; means `forcarrying the materialin .the material in a lieatedcondition from themoving support.

10. The combination of akilnijan oscillati ing support in .the kiln overwhich the matel rial is ed and a erusher in position to ''.eceive thematerial in a heated condition from the oscillating support.

11. 'Ihe combinationofa kiln; it moving support `within the kiln overwhichthe material is fed; a crushefr in position 'toreoive the materialin a heated condition from the4 movin g support; anda second movablesupport over w uch the "material is fed andtreated by heating, 1nposition to receive the material i" rom the crusher in a heatedconditio'ii.f`

12. The combination of a kiln; a moving supportwithin the kiln overwhich thei'miitei rial is fed; a crusher in positionto receive thematerial in a heated condition from the n ioving support; and a secondmovable support, over which the material is'fed and treated by heatin f,in position to receive the materia-l from t `ie crusher in a heatedcondition.

1 3r yThe combination of Va'kiln; a moving" support Within the kilneverwhioh the ina-- trlal is fed' I'acrusher in position to receive themateria in a heated condition from the moving sup ort; anda secondmovables port, over w., 'ch the material is fed and trel ed b heating,in positiointo receive the Illia#-l vteria from thecrusher in a heatedcondition sind second Support bein rigidly commited with the firstsupport an' movin with it.

14. The combination with a k ;l a movable support arranged in the kilnover which the material fed; and a crusher arranged 15. TheIoombiliution of n kiln; a movablc l support arranged on inclination intho kiln; und grinding wheels nrrnngod inboi'inodintcly on the ends 0lsind sup mrt, nirnnffoil to operate thereon to crush t, lo nnrtorinl` nsit, moves on the. su port.

on the kiln over which the material is foil n Crusher arrangedinternieilintely of the ends ofthe support and o eruting upon the,matinrial as it is fed on t 1e support; und flevicos forde'lecting theheat, away from tlm Crusher.

17. The combination of a kiln; n. movableY semi-alrcular support 1n thekiln; crushing wliools ni'rnngofl to opornto upon tho su )portintormodintoly of its ondsynnd n (lolloctol nrrnngml over the crushingIwlioolal for dvlocting the lnnibod games ol' Lilo kiln.

18. 'llio combination ol' n kiln; n support arranged in the kiln; moonsl'or loading tho- Innt'orinl oontil'luounly ovm' tlm snplnnl; nnil n,cruslior nrrnngod inorincilmtoy ol' Lino @nils ol' Llio Huliporl for(,1u:-l\in;r innlcrlnl ns 16. The combination of n kiln; n support itfoil over t le support.l

ln testimony w'lioreol', l lnwo lnu'ounto soi my hund 1n the presence oltwo subscribing witnesses.

.ROBERT W. l. lIUllN. W'itnosnon:

lllanlncnr M. Moonic, l1. A. JonNH'roN.

